/*
 * Copyright (c) 2014-2024 Stream.io Inc. All rights reserved.
 *
 * Licensed under the Stream License;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    https://github.com/GetStream/stream-chat-android/blob/main/LICENSE
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.getstream.chat.android.ui.common.feature.messages.composer.query.formatter

import java.text.Normalizer

/**
 * Ignore diacritics in the query string.
 */
internal class IgnoreDiacritics : QueryFormatter {

    private val diacriticsRegex = "\\p{InCombiningDiacriticalMarks}+".toRegex()
    override fun format(query: String): String {
        return query.removeDiacritics()
    }

    private fun String.removeDiacritics(): String {
        if (this.isEmpty()) return this
        val normalized = Normalizer.normalize(this, Normalizer.Form.NFD)
        return normalized.replace(diacriticsRegex, "")
    }
}
